Chinese cabbage management: timely application of seedling fertilizer, fertilizer, pellet fertilizer and heart fertilizer to promote the rapid growth of Chinese cabbage. During the ball-forming period of Chinese cabbage, the water requirement is large. Generally, water is poured once every 5 to 6 days, and the soil is kept moist to promote the rapid growth of the leaf ball. Stop watering 7 to 10 days before harvest to facilitate winter storage.

Management of radish and carrot: promote control after seedling period; after “fixing period”, timely watering, so that the soil is always kept moist; water is stopped half a month before harvest. Topdressing should be based on quick-acting fertilizers, chasing the first fertilizer in the “fixed period”, second feeding after half a month, applying 10-15 kg of ammonium sulfate per mu, appropriate application of potash, and then 15 to 20 days. For the third time, the amount of use is slightly less than the previous two.

Cauliflower and Cabbage Management: Autumn cauliflower and autumn cabbage are the key periods for the implementation of topdressing. The amount of topdressing should be large, and the implementation of fertilizer and water attack can generally apply 30 kg of three-element compound fertilizer to promote the rapid growth of plants. After the heart leaves begin to wrap the heart, the urea and potassium sulfate are each 5 kg. After the seedlings are slowed down, water is poured every 5 to 7 days. After entering the rosette period, the amount of watering should be larger, and the amount of watering should be properly controlled in the middle and late stages of the package.

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Inactivated Disposable Virus Sampling Tube

Inactivated Disposable Virus Sampling Tube is based on Hank's balanced salt solution enriched with inactivator and nucleic acid protective agents.

It is used for nucleic acid extraction of samples such as viruses,mycoplasma,chlamydia and ureaplasma. Inactivated Disposable Virus Sampling Tube is an upgrade from the Hank's solution. Additional various components,such as BSA,HEPES,amino acids,cryoprotectant,etc.,are added to enhance the virus integrity. It can be used for nucleic acid extraction of virus,mycoplasma, chlamydia and ureaplasma samples and later virus isolation. The pH of the preservation solution is 7.4±0.5. The medium contains antibiotics and antimycotics for the purpose of inhabitation of bacteria and yeasts overgrowth.

It helps to maintain the cellular integrity and preserve the viruses, mycoplasma, chlamydiae and ureaplasma.

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